By Kyle Mew, Rick Boyer
The Android OS has the biggest set up base of any working procedure on the earth; there hasn't ever been a greater time to benefit Android improvement to jot down your individual purposes, or to make your personal contributions to the open resource community!
This “cookbook” will make it effortless so that you can leap to a subject of curiosity and get what you want to enforce the function on your personal software. while you're new to Android and study top by way of “doing,” then this ebook will supply many subject matters of interest.
Starting with the fundamentals of Android improvement, we circulation directly to extra complex recommendations, and we'll advisor you thru universal initiatives builders fight to unravel. the 1st few chapters disguise the fundamentals together with actions, Layouts, Widgets, and the Menu. From there, we disguise fragments and information garage (including SQLite), gadget sensors, the digital camera, and GPS. Then we circulation on extra complex issues resembling snap shots and animation (including OpenGL), multi-threading with AsyncTask, and net performance with Volley. We'll additionally show Google Maps and Google Cloud Messaging (also often called Push Notifications) utilizing the Google API Library.
Finally, we'll have a look at a number of on-line providers designed specifically for Android improvement. Take your software big-time with complete net internet companies with no need to develop into a server admin by means of leveraging the facility of Backend as a carrier (BaaS) companies.
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Additional resources for Android Application Development Cookbook Second Edition
Run the program and try it out. 18 Chapter 1 How it works... As you can see, this is very similar to saving state data, because it also uses name/ value pairs. Here, we just stored an int, but we can just as easily store one of the other primitive data types. setString(). Editor. This is evoked with edit() and accepts remove() and clear() procedures as well as setters such as putInt(). Note that we must conclude any storing that we do here with the commit() statement. There's more... There is a slightly more sophisticated variant of the getPreferences() accessor: getSharedPreferences().
In the TableLayout XML, each row is added to the table using a TableRow. Each View becomes a column. This is not a requirement as cells can be skipped or left empty. ) The GridLayout uses the opposite approach. The number of rows and columns are specified when creating the table. We don't have to specify the row or column information (though we can, discussed as follows). Android will automatically add each View to the cells in order. 36 Layouts There's more... First, let's see more similarities between the layouts.
Getting ready To stay focused on the layouts and offer an easier comparison, we will create two separate applications for this recipe. Create two new Android projects, the first called TableLayout and the other called GridLayout. How to do it... 1. xml. Change the root layout to TableLayout. 2. Add three TableRows with three sets of TextViews to each TableRow to create a 3 x 3 matrix. For demonstration purposes, the columns are labeled A-C and the rows 1-3, so the first row of TextViews will be A1, B1, and C1.